Gas-engine.



PATENTED JUNE 9, 1908.

P. S. GLAUS.

GAS ENGINE.

APPLICATION FILED MAB-.18. 1907.

a! i i E ,6 6 122 INVENTOR Altomeys.

PHILIP S. OLAUS, OF DETROIT, MICHIGAN.

GAS-ENGINE.

Specification of Letters Patent.

Patented June 9, 1908.

Application filed March 18, 1907. Serial No. 362,825.

To all whom it may concern:

. Be it known that I, PHILIP S. CLAUs, a citizen of the United States, residing at Detroit, county of Wayne, State of Michigan, have invented a certain new and useful Improvement in Gas-Engines, and declare the following to be a full, clear, and exact description of the same, such as will enable others skilled in the art to which it pertains to make and use the same, reference being had to the accompanying drawings, which form a part of this specification.

My invention relates to gas engines, and has for its object the production of an improved two cycle gas engine.

In the accompanying drawings :Figure 1, is a sectional elevation of a gas engine embodying my invention. -Fig. 2, is a detail view, showing a difierent position of the piston in the cylinder. Fig. 3, is a detail view similar to Fig. 2, showing a slightly different relative arrangement of the ports.

A is the cylinder, and B the crank case.

C is a channel or passage through which the explosive mixture compressed in the crank case B may pass to the cylinder A by the port G above the piston when the port G. is uncovered by said piston.

D is a check valve interposed in the passageO between the crank case and the port G.

E is a second passage in the cylinder walls by which a portion of the mixture from the crank case may pass, as hereinafter de scribed.

J is the piston adapted to reciprocate in the cylinder A.

K is a connecting rod; L the crank pin; N the crank disk, and M the main shaft.

e is the port formed by the lower end of the passage E.

F is a ort or aperture formed through the wall of t e piston J and adapted to register with the port 6 at the lower end of the piston stroke to put the interior of the piston and the crank case, into connection with the cylinder above the piston J through the passage I E and port G.

H is a passage through the piston J adapt ed to convey the exhaust gases, as hereinafter described.

I is the exhaust port opening from the cylinder A to the exhaust pipe.

h is the port formed at the lower and outer end of the passage H.

V indicates a valve through which the exopening, as shown in Fig. 2.

plosive mixture may be drawn into the crank case B.

The operation of the above described engine is as follows :The explosive mixture being in the cylinder A above the piston J, the piston rises, compressing said mixture above it. Toward the upper end of the piston stroke, the mixture is fired, driving the piston downward. When the port p registers with the port I, the exhaust gases pass out through the passage H and port I, relieving the pressure above the piston J. This position of the parts is shown in Fig. 2. At this point the inlet port G may be just As the piston descends further, the port G is fully opened, and the exhaust port I is closed, the piston still descending draws a vacuum above said iston and tends to compress the mixture further in the crank case, thus both forcing and drawing the mixture from the crank case of the cylinder above the piston J. When the port F registers with the ort c, the compressed mixture remaining in the crank case B, is driven by its ressure into the partial vacuum above t e piston J through the passage E and port G; this cycle of operation is continuously repeated, during the operation of the engine.

If desired, the ports may have difierent relative arrangements, one of which is indicated in Fig. 3, in which the exhaust port I is closed when or before the port G commences to open.

By the above described construction, it will be noticed that a portion of the explosive mixture is driven into the cylinder A above the piston J when the port I is closed, and such mixture cannot, therefore, be driven through the cylinder and out the exhaust port. The port F and passage E provides for taking the mixture out of the hollow of the piston J, as well as affording a less obstructe'd passage for such mixture.

What I claim is 1. In a gas engine having a cylinder provided with an exhaust port, the combination of means for opening and closing the exhaust port before and after the end of the power stroke and holding said exhaust port closed toward the end of the power stroke, and means for introducing an explosive mixture into the cylinder toward the end of the pCpWer stroke when said exhaust port is c ose 2. In a gas engine, the combination of a cylinder having an exhaust port and aninlet port through the wall of the same, a piston provided with a passage opening above and at the periphery of the same adapted to register with so as to open, and pass by so that said piston shall close, said exhaust port toward the end of the power stroke, said inlet port being so located that the piston shall pass over said port toward the end of said stroke, leaving said port open.

3. In a gas engine, the combination of a cylinder, a iston adapted to reciprocate therein, an inlet port in said cylinder, means for compressing an explosive mixture, said engine being provided with a passage for conveying the compressed explosive mixture to the cylinderthrough said inlet port, a nonreturn valve located in said assage and adapted to open toward said in ct port, said engine being provided with a second passage adapted to convey explosive mixture to the cylinder through said inlet port, and means for opening and closing said second passage.

4. In a gas engine, a cylinder having an.

exhaust and an inlet port, means for comressing the explosive mixture, said engine emg provlded with a passage adapted to.

convey the explosive mixture to the cylinder through said inlet ort, a non-return valve in said passage, ant means for opening and closing said' exhaust port before the end of the working stroke, said inlet port being adapted to be opened at the end of the working stroke of the piston.

5. In a gas engine, a cylinder having an exhaust and an inlet port, means for compressing the explosive mixture, said engine being provided with a passage adapted to convey the explosive mixture to the cylinder through said inlet port, a non-return valve in said passage, means for opening and closing said exhaust port before the end of the working stroke, means for opening the inlet port at the end of the working stroke of the piston, a second passage for conveying the explosive mixture to said cylinder, and means for opening said second passage at the end of the working stroke of the engine.

In testimony whereof, I sign this specification in the presence of two Witnesses.

PHILIP S. OLAUS.

\Vitnesses ALICE TowNsENn, ELLIOTT, J. STODDARD. 

